1 1/2 cups unsalted butter, softened
1 cup sugar
1 teaspoon vanilla extract
3 1/2 cups all-purpose flour
1/2 teaspoon salt
seedless strawberry, raspberry, apricot jam/jelly (or whatever flavor you prefer)
1. Preheat the oven to 350 degrees. In a large bowl, cream the butter and sugar and stir in the vanilla extract. In a medium-sized bowl, mix the flour and salt. Combine the flour mixture and the butter mixture until the dough is crumbly but holds together when pinched.
2. Take a walnut-sized piece of dough in one hand. With the thumb of the other hand, gently knead it three times. Roll it into a ball and place on an ungreased cookie sheet. With your knuckle or thumb, press a well in the center and fill with 1/2 teaspoon of jelly.
3. Bake for 10 to 15 minutes.
The recipe says it makes about 6 dozen cookies. However, this depends on the size you make your cookies.
*Recipe from http://familyfun.go.com/recipes/thumbprint-cookies-678825/